Are all your Cat-Back Systems made with Stainless Steel?
- Yes, all our Cat-Back Exhaust Systems are completely made
from stainless steel. Everything from the pipes, hangers, clamps,
muffler and tips. *Tips, mufflers, and resonators (where applicable)
are "mirror finish", polished stainless steel. Stainless
steel is better looking and more durable than aluminum.
What does the Cat-Back Exhaust System include and can I install
the system myself?
- Our cat-back exhaust systems are COMPLETE. Everything from
the pipes, hangers, clamps, mufflers and tips are included and
stainless steel in construction. Tips, mufflers, and resonators
(where applicable) are "mirror finish", polished stainless
steel. They come with everything needed to bolt up in place
of your factory system using basic tools. The majority of MAGNAFLOW
products do not require welding, cutting or bending, however,
select applications may require additional welding for optimal
installation. While our systems are designed with consideration
for “Do It Yourself” installations, we recommend
professional installation. Typical installations take about
Does a dual cat-back exhaust system perform better than a single?
- In most cases a single exhaust will give you better torque
and horsepower. The exception would be a heavily modified engine.
Question: Will I get better gas mileage with MagnaFlow Performance
- YES, a better performing engine uses fuel more efficiently,
if driving conditions and tendencies are similar. However, it
is not a guarantee. Our mufflers were designed as performance
mufflers. *MagnaFlow's diesel exhaust for trucks will see the
biggest gains due to our systems' dropping EGT's over 150 degrees.
How much horsepower can I expect to gain?
It's different for every car, but typically expected gains
are in the average range of 10%. Replacing the muffler/exhaust
with a MagnaFlow will help your engine increase power by being
able to expel exhaust gases quicker. This creates less workload
for the engine, makes it run more efficient, and results in
Are MagnaFlow Performance Exhaust systems legal?
- YES, all of our Cat-Back Exhaust Systems comply with most
state and federal laws with the exception of the Magnapacks.
(Please note, local laws may vary. Contact your local law
enforcement for specific guidelines.) Our products are designed
and tested to meet legal sound level limits; however, when
used in conjunction with other products (such as air intake
systems or exhaust headers), the overall combined effect might
cause particular vehicles to exceed the allowable limits.
A new law (27150.2 VC) does not require police to use a sound
meter to test for excessive noise. A citation is now based
upon the officers judgment. Cited violators may have testing
done at a smog referee station.
Difference between MAGNAFLOW PERFORMANCE, MAGNAFLOW XL PERFORMANCE,
MAGNAFLOW PRO PERFORMANCE, MAGNAFLOW DIRECT-FIT MUFFLER KIT.
- MAGNAFLOW PERFORMANCE diesel systems are our premium line
featuring a POLISHED 100% stainless muffler and mandrel-bent
stainless steel tubing with a DOUBLE WALL tip.
- MAGNAFLOW XL PERFORMANCE is our mid-level performance diesel
system featuring a 100% stainless steel muffler and mandrel-bent
stainless steel tubing with a single wall tip.
- MAGNAFLOW PRO PERFORMANCE is our entry-level performance
diesel system featuring a 100% stainless steel muffler and
mandrel-bent stainless steel tubing. Optional 5” diesel
tips are sold separately.
- MAGNAFLOW DIRECT-FIT MUFFLER KIT If you want to get some
of the sound, looks and performance of our full cat-back systems,
but are working on a budget, consider Magnaflow’s all
new 100% stainless steel direct-fit muffler kit.
*All four lines are 100% stainless steel AND backed by a lifetime
Why is MagnaFlow the best exhaust system?
- Nothing performs better, looks better, or sounds better
than MagnaFlow Performance Exhaust. Our Research and Development
Team invests many hours to ensure our products stay competitive
and perform the way they should. Our systems feature straight-through
flow designs for the ultimate in unrestricted horsepower and
torque for big power while maintaining exhaust efficiency.
The internal MagnaFlow muffler is designed of stainless steel
perforated core, stainless steel wool, and an acoustical absorbent
material -- superior to fiberglass (which many other manufacturers
use). No baffles, chambers, or louvers. No restrictions at
all, just straight-through, wide-open performance with a smooth,
deep tone, and each MagnaFlow stainless muffler has a highly
polished mirror finish for a show car look. Our systems give
a 20% reduction in bends over your O.E.M. system to provide
the power you demand.
Why ISN'T a bigger pipe always better?
- Don't be fooled! Bigger is not better! Many people think
that having the biggest diameter pipe is the best way to make
power. Not true. Due to a variety of factors, extensive testing
is required. We've dyno'd extensively and our systems yield
optimum power increases. Some manufacturers claim even higher
horsepower numbers. It is a fine line to reduce backpressure
while maintaining good exhaust velocity. It is not about getting
the biggest pipe, it is about getting a more efficient pipe
diameter while maintaining exhaust velocity.
There has to be a balanced design to enhance the maximum engine
output, exhaust gas velocity, and sound. For example, imagine
blowing air through a straw (comparing it to a smaller diameter
pipe). This would take time to release all the air from your
mouth, and you would feel pressure in your mouth while doing
so. Now imagine blowing air through a paper towel roll (comparing
it to a larger diameter pipe). You will relieve all your air
much faster and feel little or no air pressure in your mouth
because of the larger capacity of the tube. This is why it
is important to get the correct size piping in order to relieve
backpressure while maintaining thermal efficiency.
Use the guide below when calculating pipe size for custom
exhaust work. Keep in mind that the goal is to improve exhaust
flow. In most cases, just changing the restrictive OEM muffler
and replacing it with the same size straight-through, Wide
Open Performance MagnaFlow muffler will do the job.
reduce additional backpressure, the OEM exhaust tubing can
be replaced with mandrel-bent tubing of the same size or one
size up from the OEM. As a general rule, you can enlarge the
pipe diameter of your OEM exhaust system by 1/4 to 1/2-inch
to increase your horsepower. However, any additional increase
in pipe diameter is likely to decrease your performance; specifically,
low end torque.
What's the difference between Stainless Steel and Aluminized
- The main difference between the two is pricing and the outer
shell of the mufflers. Stainless Steel cost more than Aluminized
Steel. The Stainless steel mufflers have a polished stainless
steel shell and are 100% stainless construction. Nothing looks
better or lasts longer than stainless steel. The aluminized
mufflers have stainless internals and necks but have an aluminized
outer shell. Also, the aluminized steel has only a protective
coating that, if scratched off, may rust. Both mufflers have
identical internal construction and materials and both offer
you a lifetime warranty and will give you that Straight-through
Wide Open Performance with no restrictions. No restrictions
equals better flow, and better flow equals more horsepower.
What discolors tips? How do I fix it?
- No matter what your tip is made of (chrome, stainless steel),
eventually, it might discolor. During the final polishing
process, the compound that is used to polish the metal (which
is actually comprised of other metals ground into fine particulates)
becomes embedded in the microscopic pores of the tip. Eventually,
these fine particulates from the compound oxidize and change
color, giving the tip a yellow/gold appearance. This is accelerated
with heat and with exposure to harsh climates. In some cases,
the tip may turn blue. This is from heat. Some vehicles, especially
modified vehicles, see increased exhaust temps as a result
of their modifications. Even if the vehicle is not modified,
some vehicles simply produce more heat than others and single
walled tips are especially susceptible. However, eventually,
all tips can change color, even Stainless tips (note the name:
the tip affect performance or power?
- No. There is virtually no affect on power, no matter what
tip you use. There are some tips that feature “resonators”
built in, which amount to little more than some additional
louvers in the inside of the tip. This may help to reduce
noise, but only slightly.
Do you offer a warranty on all your products?
Yes, we offer a lifetime warranty on all our MagnaFlow Products
with the exception of our XL series mufflers/exhaust, catalytic
converters and our titanium performance exhaust, which offer
a limited warranty.
Will it void my factory warranty?
- NO. It's also illegal for a dealer to deny you the OE warranty
because you have changed the exhaust system. This is an often
asked question. But you will need to be armed with some basic
information.Under the Magnuson Moss Warranty Act of 1975,
15 USC, 2302 and Clean Air Act 42 of USA code 7541, you have
This legislation basically states that:
In order for a dealer/manufacturer to deny a warranty on a
claimed part, they must PROVE that the part YOU installed/had
installed DIRECTLY caused the failure of the part on which
you’re claiming the warranty.